What is new in Flutter 3.22

In this blog, The Tech Robot will provide what is new in Flutter 3.22, such as mobile app development with Flutter 3.22, Flutter 3.22 improvements, Flutter 3.22 beta features, Flutter 3.22 UI changes, and much more. Let’s dive in.

What is flutter?

An open-source UI toolkit called Flutter was developed by Google to facilitate the development of cross-platform applications including the web, Fuchsia, Android, iOS, Linux, macOS, and Windows from a single codebase. It made its debut in 2015 and officially launched in May 2017.

What is new in Flutter 3.22?

Flutter 3.22, which became available on May 14, 2024, is a substantial upgrade to Google I/O‘s framework, which has emerged as a dominant tool in app creation.

The most recent edition, Flutter 3.22, includes several additions and updates to improve the developer experience and app development efficiency, resulting in a smoother and more efficient workflow.

Flutter 3.22 enhancements

1. Disable Test Shuffling: The widget_tester_leaks_test.dart file has been deactivated to provide more consistent and trustworthy test runs.
2. Fix Spell Check Errors: Spell check now handles text that contains regex-reserved letters more effectively.
3. Remove Order Dependency: Enhancements to eliminate order-dependent situations, enhancing predictability and stability.
4. Upgraded leak-tracking: These methods improve memory management and debugging.
5. New Form Validation technique: A new form validation technique has been introduced, providing more flexibility and control.
6. Dynamic view scaling: It has been reintroduced to boost layout flexibility.

Flutter 3.22 updates

1. Vertex AI for Firebase Dart SDK Preview Release: Discover cutting-edge AI functionality for Dart and Flutter apps using the new Vertex AI integration.

2. Google Mobile Ads SDK for Flutter: Improve your app’s monetization capabilities with expanded support and functionality.

3. Deep linking and predictive back gestures: Use deep linking and predictive back gestures to improve the navigation and user experience in your Flutter apps.

4. Leak tracking tests: They have been improved to provide greater accuracy and dependability.

5. Handling of Null Cases in ProcessText QueryTextActions: There has been improvement in handling null cases, resulting in fewer errors.

6. Text Style Debug Label: Ensures that debug labels are not disregarded in TextStyle copyWith, resulting in more effective debugging.

Google Flutter 3.22 release notes

Now we know what is new in Flutter 3.22 let’s look at Flutter 3.22 release notes:

• The framework has been updated to include corrections for test shuffling, spell check throws, RouteObserver examples, form validation methods, null cases, and outer scrollable jumping in NestedScrollView. Improvements include leak detection, covariants, the Skia Gold client, and native compilation.
• The text contains changes to different features, such as returning to Gradle Kotlin DSL, adding switch expressions in widgets, updating dependencies, maintaining first-frame data in integration tests, formatting Kotlin using ktlint, and correcting minor spelling issues.
• Tone-based surfaces, accent color add-ons, logarithmic search corrections, switch expressions, calendar date picker difficulties, and limitations all help to improve the user experience in InputDecorator M3.
• The Material 3 project has released many updates, including configurable text selection toolbar buttons, Flutter 3.22 bug fixes, typo fixes, and improvements to port autocomplete, tone-based surfaces, animation styles, and scrollbar error messages.

Flutter 3.22 for iOS and Android

iOS enhancements include better native asset handling and debugging capabilities, support for wireless debugging on iOS 12 and older, and improved CI log upload and warning for unpaired iOS devices.

Android improvements include converting the Hello World app to Gradle Kotlin DSL for a more modern and manageable build script, reducing the PlatformViewRenderTarget interface for easier usage, and adopting best practices in FlutterRenderer to improve performance. SurfaceTextureSurfaceProducer was recently added to handle surface textures properly. These modifications are intended to enhance the development process for iOS apps.

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Flutter 3.22 developer tools

1. Native Asset Support for Android Add2App

The upgrade allows for more seamless integration of native content into Android apps, streamlining the add-to-app process.

2. Improved shader target selection

Its improved shader target selection results in optimized shaders for various Android rendering environments, which improves graphics performance.

3. Android Gradle

Gradle build scripts may now use Gradle Kotlin DSL. Gradle’s Kotlin DSL support improves code editing and readability in Android projects.

4. Asset Bundle Optimization

Asset bundle management has been simplified to increase performance, making maintaining and optimizing app assets easier.

5. WebAssembly (Wasm)

Flutter 3.22 adds WebAssembly (Wasm) support, which improves Flutter 3.22 performance upgrades for applications with complex animations and transitions. Wasm speeds up frame rendering by 2x on average and 3x in worst-case conditions, resulting in smoother animations and a more responsive user experience.

Flutter 3.22 new widgets

The ‘Dynamic View Sizing’ functionality has been updated to allow developers to construct layouts that shift dynamically dependent on screen measurements.

This enables the building of responsive designs by automatically extending or shrinking a widget within an ‘Expanded’ or ‘Flexible’ container.

The ‘MediaQuery’ class enables developers to query the current screen size and alter widget sizes accordingly.

Dart updates in Flutter 3.22

Flutter 3.22 includes the Vertex AI for Firebase Dart SDK, which enables developers to integrate generative AI elements into their apps. The Flutter 3.22 SDK is designed for production use, with fast performance and scalability, in addition to Firebase App Check integration for protecting backend infrastructure. Vertex AI improves apps using powerful machine learning algorithms.

Conclusion

So, now we know what is new in Flutter 3.22 and its new features and enhancements, thus why it is important for developers. The developer experience has been more streamlined and efficient, thanks to advances such as better spell check, memory management, and dynamic display scaling. New technologies, such as the Vertex AI for Firebase Dart SDK and the Google Mobile Ads SDK, increase app functionality and revenue possibilities. Additionally, iOS and Android-specific updates improve the development process for both platforms. New features in Flutter 3.22 not only improve current functionality but also add new capabilities, allowing developers to construct high-quality, responsive apps across several platforms.